PROJ01972 ‎(2)‎

• Contract/PO #: C150130
• Contractor Name: South Side Reservoir Company
• Contract Type: Loan
• Water District: 4
• County: Larimer
• Loan Projects - Doc Type: Feasibility Study

INTRJDOCTION

The results of the horizontal borehole logging of the outlet ~rks of
Souths ide Reservoir are sumnar ized in this report. This study was
undertaken to determine the condition of the concrete surrounding the
15-inch inner diameter outlet pip~.
The field ~rk for this study was performed on March 21, 1984. The
logging services were provided an:! supervised by Mr. John Butler, BPB
Instrmnents, Grand Junction, Colorado. A brief description of each logging
methcrl is presented in the Appen:li.x to this report. Borehole logs of
seismic velocity (sonic log), natural radiation (ganma), bulk density
(garrma-ganma), outlet pipe diametE~r (caliper) and porosity (neutron) were
run along the bottan of the outlet pipe. Al though it was planned to run the
same borehole logs along the top of the outlet pipe, this was not possible
due to a number of logistical factors.
Davenport/Hadley, Ltd. YtOUld like to express their awreciaticn to
Messrs. Stephen McMillan, Vernon ~.uelke and Jim Meyers of Southside
Irrigation District, and Mr. Allan Rogers, Field Engineer, Colorado Division
of Water Resources for their assistance, suggestions and logistical support
during the field operations.

SIJMv1ARY

Based on the horizontal borehole logging performed in the outlet pipe of
Southside Reservoir two ananalous areas have been identif ied. The area
between pipe stations 0+95 and 1+32 appears to contain concrete of poorer
quality than other areas. The other ananalous area, between pipe stations
0+27 and 0+39, cannot be explained.

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